cytokinesis Syllabification: (cy·to·ki·ne·sis)Pronunciation: /ˌsītōkəˈnēsis, -kī-/Definition of cytokinesis noun Biology the cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells. cytokinesis in other Oxford dictionaries Definition of cytokinesis in the British & World English dictionary